Prospective Multicenter Human Randomized Controlled Evaluation of NOTES® Cholecystectomy

Primary To assess the safety and efficacy of transgastric and transvaginal cholecystectomy
compared to conventional laparoscopic cholecystectomy.

To assess pain associated with transgastric and transvaginal cholecystectomy compared to
conventional laparoscopic cholecystectomy.

Secondary To assess cosmesis associated with transgastric and transvaginal cholecystectomy
compared to conventional laparoscopic cholecystectomy.

To assess objective operative cost and logistical comparisons between transgastric and
transvaginal cholecystectomy compared to conventional laparoscopic cholecystectomy.

To identify unforeseen barriers to transgastric or transvaginal surgery adoption.

Inclusion Criteria:

- Competent male or female subjects, between the ages of 18-75 and who present for
elective cholecystectomy will be offered participation in this study.

- Male subjects must be willing to have the cholecystectomy by either the laparoscopic
or transgastric NOTES approach.

- Female subjects must be willing to have the cholecystectomy by either the
laparoscopic or either the NOTES approaches (transgastric and/or transvaginal) being
performed at the site.

- Patients offered participation in this study must provide written, informed consent
and meet the following criteria prior to randomization.

- Diagnosis of benign gallstone disease which requires cholecystectomy.

- ASA Class 1 or 2.

- Willingness to have laparoscopic cholecystectomy performed and have research data
collected for control group.

- Willingness to have abdomen photographed (for cosmesis assessment).

- For sites performing transgastric NOTES approach

- Willingness to have cholecystectomy performed via NOTES transgastric approach.

- Willingness to have NOTES procedure videotaped.

- For sites performing transvaginal NOTES approach - Female subjects only

- Willingness to have cholecystectomy performed via NOTES transvaginal approach.

- Willingness to have intra-abdominal procedure digitally recorded.

- Pelvic examination in the past 12 months without significant pathology.

Exclusion Criteria:

- Pregnant women.

- Obese patients (BMI > 35).

- Patients with severe medical comorbidities (ie, NOT ASA Class 1 or 2) will be
excluded such as:

- Chronic renal failure

- Chronic liver disease

- Congestive heart failure

- Patients with a presumed gallbladder malignancy.

- Patients with a history of prior open abdominal or laparoscopic or transvaginal
surgery. However patients with prior appendectomy, tubal ligation or Cesarean section
will be included.

- Patients who are taking immunosuppressive medications and/or immunocompromised.

- Patients with a prior history of perineal trauma leading to significant alteration of
vaginal anatomy.

- Patients with a history of ectopic pregnancy, pelvic inflammatory disease, large
fibroids or severe endometriosis.

- Patients with known common bile duct stones. (ie, not cleared prior to surgery).
Patients with common bile duct stones discovered intra-operatively will remain in the
study.

- Patients on anticoagulation drugs other than once daily aspirin. Abnormal blood
coagulation tests. Minimal abnormalities may be allowed at the discretion of site
principal investigator.

- Gallstones> 2.5cm in diameter.

- Presence of untreated esophageal stricture.

- Surgically altered gastric anatomy or severe uncorrected paraesophageal types 2, 3 or
4.

- Unwillingness to consent to NOTES procedure(s).

- Acute cholecystitis or cholangitis

- For sites performing transgastric NOTES approach

- Contraindicated for esophagogastroduodenoscopy (EGD).

- Patients with hypersecretory states.